Module gr_surfacenormals

NAME
    gr_surfacenormals - a GRToolbox module
DESCRIPTION
    Calculates the normal vectors of a surface..
SYNOPSIS:
    -[closed closedu closedv distance scale h o v noc nof now skip f m c e i s l]
    -help    For help on all options.
Special Options:
    -closed    Assume, that the curves are closed.
    -distance float    Distance between curve and normal curve.
    -scale float    Scale factor for length of normals.